To get the titles Middle Trainer, Advanced Trainer, Junior Trainer, etc, you must clear curtain colosseums. If you have three or more of the same type of Pokemon a new Trainer Title will be availible. (The Pokemon doesn't have to be just that type.)

Examples: Young Boy with three Ghost types = Spirit Boy Young Boy with three Dragon types = Dragon Boy

P.S. Different Triner Titles change the Catchphrases of your Trainer unless you made Custom Catchphrases

May 26th 2013Guest
Actually, to unlock trainer titles like "Advanced Trainer" or "Senior Trainer," you have to 'rank up.' I'm not sure on the exact criteria to do so, but the easiest way is to just clear the Sunny Park Colosseum with uber-powerful Pokemon a bunch of times.

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